I've just received my unit and 5 of the 6 USB ports don't align with the bezel and I can't plug a USB cable into them. Kind of disappointed. Haven't plugged it into the wall yet to test charging functionality as there's no point at this stage.

So first off why does it seem this item is out of stock or dead on multiple websites like Newegg and Amazon? The product has been removed from Amazon completely. Not even a for sale page. It's a dead link. Newegg has it as out of stock prob never to be in stock again.
Only place that has it in stock is BH Photo and it's the same price with free shipping!
Edit: You can also get the Aukey version of this on Amazon for less than this and all the non quick charge ports on it output at 2.4amps unlike this device. So really no reason to buy this.

AC Adapters are power supplies, in that they take AC power and convert it into a supply of DC power that your device can use, via transformers or by other means (such as switch-mode power supplies). This is the same concept any other power supply you have uses, but sometimes things require different power levels or even types. Schitt's headphone amps, for instance, all run off of AC power instead of DC.
Modern devices will only pull as much as they need, because safety circuitry is built into almost all modern electronics. Likewise, a power supply is actually always pulling a small amount of current at all times as long as it is plugged it, but will ramp up the amount it converts with greater demand, up to its physical thresholds.
You don't have to worry about this damaging any of your devices, if that's your concern. ;)
EDIT: This is all dependent on the fact that you have a stable mainline power system that you are plugged into. If your power coming in from outside is unstable, either due to faulty wiring within the building or because of an unreliable provider, then those factors could potentially damage your power supply, your equipment, or both. Though many electronics nowadays will have safety measures against small changes in your main power lines.
EDIT2: OR you overload the building fuses for a local socket because you have too much plugged into it. A regular socket will be able to handle 80W no problem though, as long as you don't have several other high wattage devices (microwaves, air conditioners, high end computers, etc.) all pulling power at the same time from the same outlet/fuse source.
EDIT3: OR if you were actually asking "Will I overload this unit if I plug too much into it" No, you won't. It is designed to handle up to 80W and will not provide more than that even if you somehow manage to saturate its power output, which I sincerely doubt you could unless you plugged in multiple laptops or something.

I've noticed that a lot of these devices will support 2.4 A on multiple ports, but never have enough total output to support it on all the ports at once, although I could be misunderstanding the spec's. Do anyone have any idea why this would be ? The last thing I need in my life is more details to track like which ports support which .. I would love to just have a charger that no matter how much I plug into or where it will automatically provide the maximum fastest charge.

This has the power for 4 at 2.4A. 55W total output capability, but you need to understand how and what the limitations are.
Watts = Amps (A) x Voltage(V). USB is always 5V unless you use quick charge.
The top two ports have the ability to output 2.4A at 5V if that's what your device needs... or 12W total power. However they can also output more at higher voltages, like 9V x 1.8A = 16.2W. This is for quick charge devices.
The two tablet ports are limited to 2.4A 5V output and therefore will only consume 12W each, so you could power 4 devices at 12 W if you wanted. But the two ports below those are only rated at 1A.
1A x 5V = 5W. So these will not charge at the same speed by design. If you did populate all the ports there would be slight throttling, as the device is not capable of outputting more than 55 Watts, but is also constrained by its other specs, like 10A draw max.
If we consider just the top 4 though, 12W X 4 ports = 48W total. Also, if we're worried about amps, 4 X 2.4A = 9.6A draw so you're good there... but if you just had to add in the slower 2 x 1A 5V ports (5W), you would go over on both watts (58W) and on amperage (11.6A). In that scenario, throttling would occur.
The good news is that because of the variance in cables and device needs (they won't draw more than their spec is rated for) you'll probably never be able to actually use all that wattage, barring perhaps several high voltage QC devices on the top two ports instead of the 2.4A ones (in our example) along with everything else.

I suspect that the two middle USB outlets are. They use standard (that is, not the Qualcomm QC) fast charging at 5V 2.4A. The bottom two outlets are 5V 1A.
My phone, the LG V10, will quick charge in the top two outlets, but the external battery charger charges faster in the middle two outlets. I guess the battery charger doesn't support the Qualcomm quick charge spec, but can take advantage of the high amperage. I charge my Samsung Gear S2 classic smart watch on one of the 1A outlets, and I power a Teensy 3.1-powered "weather clock" (a hideous little project on a breadboard that reads out time and date using a high-accuracy RTC, and relative humidity, barometric pressure and temperature using various other sensors on a 2x20 character vacuum flourescent display) on the other one. I end up with a QC3.0 and 5V 2.4A socket open if I ever need them.
It has really helped get rid of alot of clutter on my bedside power strip.
P.S. - Interestingly enough, this was only $34.99 in the last drop, but the $7.75 shipping to USA brought my total to $42.74. This drop offers free shipping, but ends up costing an extra $0.25.

If you ever notice variance in cost for similar type items especially big difference in cost. Beware. Example a manufacture claims 27000 mAh capacity on a powerbank and it cost $40.00 but another manufacture charges $80.00....Red Flag. Most likely the less expensive PB is not a true 27000 mAh PB. Most consumers do not have the ability to test products so the some manufacturer's take advantage of this and the consumer. If it's too good to be true it probably is....